Simulating leaf appearance in a maize variety
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Bioscience journal (Online) |
Texto Completo: | https://seer.ufu.br/index.php/biosciencejournal/article/view/7108 |
Resumo: | The calculation of leaf appearance rate (LAR) is an important part of many crop simulation models. The objective of this study was to evaluate and compare a linear model (the Phyllochron model) with a non-linear model (the Wang and Engel, WE, model) for simulating LAR in a maize variety. A field experiment was carried out in Santa Maria, RS, Brazil, with seven sowing dates during two growing seasons (2005/2006 and 2006/2007). The maize variety BRS Missões was used in a randomized complete block design, with six replications. Plant spacing was 0.8 m x 0.21 m, and each plot had three 5 m rows. Three plants in the central row of each plot were tagged. The ligule (expanded) and tip leaf number was measured weekly on the tagged plants. The Phyllochron model, which assumes a linear response of LAR to temperature, and the WE model, which assumes a non-linear response of LAR to temperature, were used to calculate ligule and tip leaf number. Models coefficients were estimated using the data set callected in 2005/2006 and evaluation of the models was with the data set collected in 2006/2007 using the statistics root mean square error (RMSE), index of agreement (d) and accuracy of WE model relative to the phyllochron model (E12). The WE model was superior to the Phyllochron model for predicting leaf number, with an overall RMSE of 0.80 leaves for ligule leaf number and 1.29 leaves for tip leaf number. |
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Simulating leaf appearance in a maize variety Agricultural SciencesThe calculation of leaf appearance rate (LAR) is an important part of many crop simulation models. The objective of this study was to evaluate and compare a linear model (the Phyllochron model) with a non-linear model (the Wang and Engel, WE, model) for simulating LAR in a maize variety. A field experiment was carried out in Santa Maria, RS, Brazil, with seven sowing dates during two growing seasons (2005/2006 and 2006/2007). The maize variety BRS Missões was used in a randomized complete block design, with six replications. Plant spacing was 0.8 m x 0.21 m, and each plot had three 5 m rows. Three plants in the central row of each plot were tagged. The ligule (expanded) and tip leaf number was measured weekly on the tagged plants. The Phyllochron model, which assumes a linear response of LAR to temperature, and the WE model, which assumes a non-linear response of LAR to temperature, were used to calculate ligule and tip leaf number. Models coefficients were estimated using the data set callected in 2005/2006 and evaluation of the models was with the data set collected in 2006/2007 using the statistics root mean square error (RMSE), index of agreement (d) and accuracy of WE model relative to the phyllochron model (E12). The WE model was superior to the Phyllochron model for predicting leaf number, with an overall RMSE of 0.80 leaves for ligule leaf number and 1.29 leaves for tip leaf number.EDUFU2010-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/mswordhttps://seer.ufu.br/index.php/biosciencejournal/article/view/7108Bioscience Journal ; Vol. 26 No. 3 (2010): May/June; 384-393Bioscience Journal ; v. 26 n. 3 (2010): May/June; 384-3931981-3163reponame:Bioscience journal (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUporhttps://seer.ufu.br/index.php/biosciencejournal/article/view/7108/4851Brazil; ContemporanyCopyright (c) 2010 Nereu Augusto Streck, Luana Fernandes Gabriel, Taise Cristine Buske, Isabel Lago, Flávia Kaufmann Samboranha, Ana Paula Schwanteshttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessStreck, Nereu AugustoGabriel, Luana FernandesBuske, Taise CristineLago, IsabelSamboranha, Flávia KaufmannSchwantes, Ana Paula2022-06-09T15:56:15Zoai:ojs.www.seer.ufu.br:article/7108Revistahttps://seer.ufu.br/index.php/biosciencejournalPUBhttps://seer.ufu.br/index.php/biosciencejournal/oaibiosciencej@ufu.br||1981-31631516-3725opendoar:2022-06-09T15:56:15Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)false |
dc.title.none.fl_str_mv |
Simulating leaf appearance in a maize variety |
title |
Simulating leaf appearance in a maize variety |
spellingShingle |
Simulating leaf appearance in a maize variety Streck, Nereu Augusto Agricultural Sciences |
title_short |
Simulating leaf appearance in a maize variety |
title_full |
Simulating leaf appearance in a maize variety |
title_fullStr |
Simulating leaf appearance in a maize variety |
title_full_unstemmed |
Simulating leaf appearance in a maize variety |
title_sort |
Simulating leaf appearance in a maize variety |
author |
Streck, Nereu Augusto |
author_facet |
Streck, Nereu Augusto Gabriel, Luana Fernandes Buske, Taise Cristine Lago, Isabel Samboranha, Flávia Kaufmann Schwantes, Ana Paula |
author_role |
author |
author2 |
Gabriel, Luana Fernandes Buske, Taise Cristine Lago, Isabel Samboranha, Flávia Kaufmann Schwantes, Ana Paula |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Streck, Nereu Augusto Gabriel, Luana Fernandes Buske, Taise Cristine Lago, Isabel Samboranha, Flávia Kaufmann Schwantes, Ana Paula |
dc.subject.por.fl_str_mv |
Agricultural Sciences |
topic |
Agricultural Sciences |
description |
The calculation of leaf appearance rate (LAR) is an important part of many crop simulation models. The objective of this study was to evaluate and compare a linear model (the Phyllochron model) with a non-linear model (the Wang and Engel, WE, model) for simulating LAR in a maize variety. A field experiment was carried out in Santa Maria, RS, Brazil, with seven sowing dates during two growing seasons (2005/2006 and 2006/2007). The maize variety BRS Missões was used in a randomized complete block design, with six replications. Plant spacing was 0.8 m x 0.21 m, and each plot had three 5 m rows. Three plants in the central row of each plot were tagged. The ligule (expanded) and tip leaf number was measured weekly on the tagged plants. The Phyllochron model, which assumes a linear response of LAR to temperature, and the WE model, which assumes a non-linear response of LAR to temperature, were used to calculate ligule and tip leaf number. Models coefficients were estimated using the data set callected in 2005/2006 and evaluation of the models was with the data set collected in 2006/2007 using the statistics root mean square error (RMSE), index of agreement (d) and accuracy of WE model relative to the phyllochron model (E12). The WE model was superior to the Phyllochron model for predicting leaf number, with an overall RMSE of 0.80 leaves for ligule leaf number and 1.29 leaves for tip leaf number. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-07-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.ufu.br/index.php/biosciencejournal/article/view/7108 |
url |
https://seer.ufu.br/index.php/biosciencejournal/article/view/7108 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.ufu.br/index.php/biosciencejournal/article/view/7108/4851 |
dc.rights.driver.fl_str_mv |
https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/msword |
dc.coverage.none.fl_str_mv |
Brazil; Contemporany |
dc.publisher.none.fl_str_mv |
EDUFU |
publisher.none.fl_str_mv |
EDUFU |
dc.source.none.fl_str_mv |
Bioscience Journal ; Vol. 26 No. 3 (2010): May/June; 384-393 Bioscience Journal ; v. 26 n. 3 (2010): May/June; 384-393 1981-3163 reponame:Bioscience journal (Online) instname:Universidade Federal de Uberlândia (UFU) instacron:UFU |
instname_str |
Universidade Federal de Uberlândia (UFU) |
instacron_str |
UFU |
institution |
UFU |
reponame_str |
Bioscience journal (Online) |
collection |
Bioscience journal (Online) |
repository.name.fl_str_mv |
Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU) |
repository.mail.fl_str_mv |
biosciencej@ufu.br|| |
_version_ |
1797069069747224576 |